Double check my work for me ! a parallelogram has the vertices (-1, 2), (4, 4), (2, -1) and (-3, -3). determine what type of parallelogram. find the perimeter and area. i did this and found that the parallelogram was a rhombus. my work is below. is it correct? length of side=sqrt( (4+1)^2+(4-2)^2)=sqrt29 perimeter= 4sqrt29 area=(sqrt29)^2=29

Farmers know that driving heavy equipment on wet soil compresses the soil and injures future crops. here are data on the "penetrability" of the same type of soil at two levels of compression. penetrability is a measure of how much resistance plant roots will meet when they try to grow through the soil. compressed soil 2.85 2.66 3 2.82 2.76 2.81 2.78 3.08 2.94 2.86 3.08 2.82 2.78 2.98 3.00 2.78 2.96 2.90 3.18 3.16 intermediate soil 3.17 3.37 3.1 3.40 3.38 3.14 3.18 3.26 2.96 3.02 3.54 3.36 3.18 3.12 3.86 2.92 3.46 3.44 3.62 4.26 use the data, omitting the high outlier, to give a 95% confidence interval for the decrease in penetrability of compressed soil relative to intermediate soil. compute degrees of freedom using the conservative method. interval: to